Water-waste preventer



Oct.- 27, 1925.

W. H. GRAY WATER WASTE PREVENTER Filed Oct. 1 1923 Patented Oct. 27, 1925.

UNITED STATES WALTER HENRY GRAY, OF LONDON, ENGLAND.

WATER-WASTE PREVENTER.

Application filed October 15, 1923. Serial No. 668,781.

To all whom it may concern:

Be it known that I, Wanrnn HENRY GRAY, a subject of the King of Great Britain, re-' siding at 43 The Gardens, East Dulwich, London, S. E. 22, England, have invented certain new and useful Improvements in Wateraste Preventers, of which the following is a specification.

This invention relates to valve discharge cisterns ot' the air tight type and has for its object to provide such devices which will be efficient and reliable in action.

According to the invention an enclosed cistern is provided having a combination valve device working from lever or pull capable of discharging any given quantity of water for flushing water closet urinal, or the like; and it is perfectly silent in its op eration and can be fixed to water main in the usual manner of fixing water waste preventers.

The combination valves are titted inside the cistern and there are four holes in the cistern two in top for air and two in bottom for water, one of the latter for supply and one for flush. The combination valves are suitablv connected and are worked by lever from the outside of cistern which when pulled opens both air and flushing valves at the same time and shuts in such a manner that when the lever is returned the cistern refills.

The valve which allows the air to escape when the cistern is filling is fixed to one of the top holes and floats up with the water shutting off the air and preventing any escape of water when the cistern is full.

And in order that the invention may be better understood, I will now describe the same with reference to the accompanying drawings, in which Fig. 1 is a front elevation with cover plate removed.

Fig. 2 side elevation of Fig. 1.

Fig. 3 is an enlarged view of a portion of Fig. l.

Fig. 4 is an enlarged view of a portion of F ig. 2, but in section.

When cistern is full of water chain a is pulled which turns oil supply valve 7) and through cam 0 lifts rod d to which are attached flushing valve 6 and air valve f this allows water to flow through valve 6 air coming through valve 7.

To refill cistern chain 9 is pulled which turns on supply valve 6 and through cam 0 drops rod cl closing both valves e and f.

The valve h which allows the air to escape when the cistern is filling, floats up with the water and shuts off the air and prevents any escape of water when the cistern is full.

The cistern has an inspection door fastened with studs and nuts to stand suitable working pressure say of 40 lbs. per square inch.

What I claim as my invention and desire to secure by Letters Patent of the United States of America is:

1. A valve discharge cistern of the airtight type comprising in combination a closed cistern having inlet and outlet openings in the base and an inlet in the top, a spindle operated inlet valve in connection with the inlet in the base, an air admission valve controlling the inlet in the top, a flushing valve controlling the outlet. at the bot tom, :1 common rod carrying the air admis sion and flushing valves so that they move to open and close together and cam means on the inlet valve spindle controlling the movements of the rod carrying the air admission and flushing valves, to open said valves when the inlet valve is closed and close said valves when the inlet valve is opened for the purposes set forth.

2. A valve discharge cistern of the airtight type comprising in combination a closed cistern having inlet and outlet openings in the base and two inlets in the top, a spindle operated inlet valve in connection with the inlet in the base, an air admission valve controlling one inlet in the top, a flushing valve controlling the outlet at the bottom, a common rod carrying the said air admission and flushing valves so that they move to open and close together, cam means on the inlet valve spindle controlling the movements of the rod carrying the air admission and flushing valves, to open said valves when the inlet valve is closed and close said valves when the inlet valve is opened and an independent float actuated air admission valve in connection with the other inlet in the top, adapted to open subsequent to the opening of the first mentioned air admission and flushing valves for the purposes set forth.

In witness whereof I afiix my signature.

WALTER HENRY GRAY. 

